Best riddles with simple answers

What does the Invisible Man drink at snack time?

I move very slowly at an imperceptible rate, although I take my time, I am never late. I accompany life, and survive past demise, I am viewed with esteem in many women's eyes. What am I?

It is impossible to keep it until you give it someone else. What is that?

What goes through towns up hills but never moves?

I'm very, very big. I like to eat peanuts and hay. I have four legs and two big ears. My long nose is called a trunk. I am an...

What is the largest number you can write with just 3 digits?

I look taller when I am young. But as I get old, I become shorter and shorter. What Am I?

What do you call a calf after it's six months old?

I have four legs. I live in Africa. I am big and grey. I live in the river. What am I?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?